UFC: BJ Penn Challenges Jake Shields

BJ Penn has a lot of respect for Gracie Jiu-Jitsu and Cesar Gracie. But now it looks Like BJ is ready to fight one of them. Penn recently twittered:

“@jakeshieldsajj I would never challenge one of Cesar Gracie’s guys, but you’ve been calling me out for years. Let’s do it! I’ll contact Dana.”